Pipe-wrench.



PATENTED- APR. 16, 1907.

M. Z. VIAU.

MPE; WRENCH.

APPLICATION FILED FEB.9, 1907.

W/'TNESSES MOSES VIAU, OF PLATTSBURG, NEW YORK.

PEPE-WRENCH.

Specification of Letters .Patent Patented April 16- 1907.

Application filed February 9, 1907. Serial No. 356,537.

Td (all who/)ttt may cm1/cern,.- v

Be' it lmowrnthat I, Moses Z. VIAU, a citizen of the United States, and a resident ol Plattsburg, Fiji-"the county of Clinton and State oi York, have invented a new and Improved' Pipe-Wrench, of which the following is a fullfclear, and exact description.

This invention relates to improvements in pipe-wrenches,"and more particularly-to that 1o type of ipe-wrench' in which a chain is employed or surrounding and gripping the pipe, bar, or other object to he held by the wrench.

The object of my invention is to so construct the operating parts that the wrench may be employed to hold a pipe of any diameter without necessitating any special adjustment olf' the chain other than to hook it to one of the movable members at the desired 2o point intermediate its ends.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the 2 5 figures.

Figure 1 is a side elevation of my improved wrench, showing the chain in its open position. Fig. 2 isa view similar to Fig. 1, but showing the parte in their operative position.

3o Fig. 3 is a detailed plan view of the chain and hooks or catches to which the latter is attached, and Fig. ,4 is a perspective view of an auxiliary jaw having smooth face and adapted to be used for polished pipes.

In the speciiic em lpyment o'my invention which I have ilustrated inHthe drawings I employ 4.two members 10 and 11, piv- 5 oted together by a suitable, rivet 12 and each of said members beingiprovided with 4o extensions forming the handles, whereby the device may be operated. Preferably one of the members 10 is formed channel-shaped in cross-section and. the other member 11 is formed of a bar of steel of such a thickness 4.5 as to permit it to fit within the channel of the ,member 10.

Adjacent the rivet 12, by which the two members are held together, l attach a chain 13, so secured that it cannot be readily detached. This chain preferably comprises a plurality ol rivets or pivot-pins 14, connected together by a plurality oi' links l5 intermediate the ends of the pivots and spaced therefrom, whereby the ends of the pivots extend out beyond the-links and ai'lord means whereby the free end of the chain may be detachably secured to the member 10. p

The member 10, to which the chain is rigidly secured adjacent thepivotpoint 12, is

also provided with a plurality of hook members or catches 16 on the opposite sides thereof and spaced apart a sullicient distance to permit the link of the chain to lie therebe tween. Each hook or catch member is adaptedv to engage with the ends ol' one or more of the pivots 14 of the chain and firmly hold the chain against longitudinal movement in respect to the member 10. The other'of the two pivotcd members-namely, the bar 11-eX- tends through an opening in the end of the I vmember 1() intermediate the point at which the chain is permanently secured to the member 10 and the point at which the free end of vthe chain is detachably secured thereto.

The inner end 17 of the member 11 is provided with teeth adapted to engage with the pipe which it is desired to hold, and as the member 11 is pivotcd at a point adjacent its outer side the movement of the two handles toward each other will tend to cause the inner end 17 to move in respect to the points of attachment oi the chain and to enter to a greater degree the loop formed by the chain, as will be clearly indicated in the drawings.

In the employment of my improved device the handles are separated so as to withdraw the inner end more nearly into alinement with the point of attachment of the chain and the catch or hook member 16, and the chain is then wrapped about the pipe and the free end caught in the hook member 16. Upon pressing the handles together the end 17 enters the loop and comes into irm engagement with one side of the pipe, and the latter may thus be firmly held, and by reason of the teeth on the said end the pipe may be rotated in either direction. vPreferably the inward movement ofthe inner end 1.7 is greater than the distance between the two adjacent pivots 14 of the chain, whereby the necessity `for adjusting the connections between the chain and one of the members at more than one point is obviated and the wrench adapted to grip a pipe of any diameier.

Any suitable means .may be employed for normally separating the handle members to withdraw the inner end 17 and release the grip of the wrench, said means preferably comprising a spring in engagement with both IOO IIO

of said members* In the specific form of this means illustrated in the drawings there is When it is desired to emplo the wrench in connection with nickel-plate vor other polished pipes, Lprovide an auxiliary jaw (shown in Fig.- 4) and having a smooth surface 20 and side members 21, adapted to engage with the sides of the inner end 17 and be held by frictiqnal contact. For locking Athe two handle members in contact with each other,

' as indicated in Fig. 1', I preferably provide a locking-ring 22 of any suitable character.

Having thus described my invention, I

claim-as new and desire to secure by Letters Patent- 1. A pipe'- Wrench comprising a handle e member, a chain having one end permanently secured'thereto, means for detachably securmg .the other end of the chain thereto,

and a second handle member pivoted to the fired-mentioned member and having one end adapted to enter the loop formed by the cham at a point intermediate the points of attachment of the chain. 1'

2. A pipewrench comprising a handle member, a chain permanently. secured ad- 'agent one end thereof, a catch or hook care riedby said member and adapted to receive the free end of the chain, and a second handie member pivotally connected to the firstmentioned member at a. point intermediate the points of attachment of the chain, and having an end adapted to enter the loop formed by the chain when the handle members are brought together.

3. A pipe-wrench comprising a handle member, a chain permanently secured ad jacent one end thereof, a catc .or hook car'- ried by said member and ada ted to receive the free end of theehain, an a second handie member .pivotally connected to the rst mentioned member at a point intermediate the points oi attachment of the chain, .and-

havin an end `provided with ipping-teeth and a apte@ to enter the loop crmed by the chain when the handle' members are brought x together.

.4. A pipe-wrench comprising a handle member, a chain permanently securedto one end thereof and having outwardly-extendin pivot-pins, a hook orcatch carried by sai member and adapted to en age with the pivotins of the free end o the chain, a secon handle member pivotally connected to the iirst-mentionedv member intermediate the points of attachment of the chain andhaving an end provided with gripping-teeth adapted to enter the loop formed by the chain and engage 'Withthe pipe when the handle members are brought together, and means normally tending to separate said handle members.

5. A pipe-wrench comprising: two handle members, one of said members being chan nel-shaped in cross-section and the other of' said members adapted to fit within the channel of the Erst-mentioned member, achain, meansfor permanently attaching one end of ksaid chain to the first-mentioned member, means for'detachably securing the other end of said chain to the same member, and means for pivotally connecting said members whereby the end of one member may enter theloop formed by the chain attached to the other member when said members are brought together.

6. A pipe-wrench having a handle member, a chain secured adjacent one end thereof, a catch or hook carried by saidmember and adapted to receive the free end of the chain, a second handle member pivotallyconnected to the iirstmentioned 'member at a point intermediate the points of attachment' of the chain and having an end provided with gripping-teeth adapted to enter the'loop formed the chain when the handle members are brought together, and a detachable `jaw having a smooth face and adapted to be secured to said last-mentioned member to cover the gri pingteeth thereof.

n testimony whereof I have signed Am-yname to this specification in 'the presence of p two' subscribing Witnesses.

, l MOSESZ. VXAU.

Witnesses: i.

. Gmo. L. Armen',- FRED O. Lewis. 

